The widowmaker is back, and spies say it's a symphony on wheels. The new-generation Porsche GT2, spotted on the N rburgring recently, is the last to arrive (and most insane) of the 997-generation 911s. The rear-drive, weight-reducted beast — carbon fiber et. al. — is said to produce in the neighborhood of 500 hp. Who needs tuning shops when all that craziness rolls right out of the new Porsche Motorsports center in Weissach. Why, indeed. – Mike Spinelli